A picture taken of yourself that is planned to be uploaded to Facebook, Myspace or any other sort of social networking website. You can usually see the person's arm holding out the camera in which case you can clearly tell that this person does not have any friends to take pictures of them so they resort to Myspace to find internet friends and post pictures of themselves, taken by themselves. A selfie is usually accompanied by a kissy face or the individual looking in a direction that is not towards the camera.

The Urban Dictionary T-Shirt

A strange phenomenon in which the photographer is also the subject of the photograph, in a subversive twist on the traditional understanding of the photograph. Usually conducted because the subject cannot locate a suitable photographer to take the photo, like a friend.

Hugh-man 1: Charles, my prince! I see you took a selfie last night! I found this out on the book of faces, on the interwebz. Ghastly stuff, those selfies!

Hugh-man 2: Leave Charles alone! If he doesn't want to have friends, that is his prerogative!

Charles mumbles inaudibly as they gag him and put him in the back of a van.

The Urban Dictionary T-Shirt

The taking of a picture of yourself and posting it on Facebook because you have extremely low self-esteem and you need people to comment to tell you how hot or pretty you look. In reality you just look desperate for attention. And no matter how attractive you might be, you still look pathetic. See also duck face/kissy face makes you look retarded.

My attractive friend takes a lot of selfies and won't hang out with people hotter than her.